Traverse motion



Oct. 12,1948. 0. w. SCHLUMS v 2,451,243

' TRAVERSE MOTION Filed April 24, 1945 4 Sheets-Sheet 1 INVENTOR.

0/70. WSEZ/ /MS.

Oct. 12, 1948. o. w. SCHLUMS TRAVERS E MOT ION A Sheets-Sheet 2 Filed April 24, 1945 INVENTOR. 0/73 PK SfZfi/IIS BY /LM' 4 Oct. 12, 1948 Filed April 24, 1945 o. w. scHLuMs 2,451,243

TRAVERSE MOTION 4 Sheets-Sheet 5 INVE TOR Oct. 12, 1948. o. w. SCHLUMS TRAVERSE MOTION 4 Sheets-Sheet 4 Filed April 24, 1945 IINVENTOR. U770 [44 -5e/ams Patented Oct. 12, 1948 TRAVERSE MOTION Otto W. Schlums, Whitinsviile, Mass, assignor to l/Vhitin Machine Works, Whitinsville, Mass, a corporation of. Massachusetts Application April 24, 1945, Serial No. 589,965

3 Claims.

This invention relates to an improved mechanism for traversing the yarn guide in a machine of the tip-twister type. The invention is shown herein as applied to a winding machine of the defined type, having twister'spindles and winding rolls disposed at both sides of the machine.

My invention is also shown as deriving'its primary traverse motion from'a drum cam as shown in detail in HellandPatent No. 2,301,699, issued to applicants assignee November 10, 1942.

It is the general object of my invention to provide improved means for modifyingthe direct or primary traverse motion by either increasing or decreasing-the same, and also to provide means forvarying the increase or decrease progressively as the package is wound, in order to produce a package of any desired longitudinal section.

To the attainment of this general object, I provide cam means to control and vary the traverse to produce a package of a desired'length and contour. By utilizing cams-of selected contours, yarn packages of many desired shapes and traverses may be obtained from a single primary traverse motion. I also provide an automatic cut-out for the cam drive, and convenient means for resetting the cam.

My invention further relates to arrangements and combinations of parts-which will be herein-- after described and more particularly pointed out in the appended claims.-

A preferred form of the invention is shown in the drawings, in which Fig. 1 is a perspective View of my improved traverse motion;

Fig. 2 is a side elevation thereof;

Fig. 3 is a plan View, partly in section and showing the primary traverse motion;

Fig. 4 is an end elevation, partly in section, looking in the direction of the arrow din Fig. 3, and

Fig. 5 is a detail end elevation of certain parts, looking in the direction of the arrow 5 in Fig. 3.

Referring particularly to Fig. 3, I have shown a fixed cam box in which a drum-type traverse cam l l is rotatably mounted on a shaft !2. Winding drums l3 and M are mounted on shafts l and IE which are continuously rotated from any usual source of power. The shaft H5118 connected through a pinion I1, small gears lfi-and l9 and large gear 2!! to the drum cam H;

A traverse block 22 is mounted'to slide ateach side of the cam box l0, and each .block is moved by a cam roll 23 seated in the cam groove of the traverse cam ll. Consequently, the blocks 22 are simultaneously but reversely 'reciprocated: at the two sides of the machine. The parts. thusfar described are similar to the disclosure in the Helland patent.

The novel features of my present invention relate particularly to the improved mechanism which I have provided for transmitting motion from the traverse blocks 22 to the usual traverse rods 25, and this mechanism will now be described.

On each traverse block 22 is mounted a bracket 39 (Fig. 2) supporting a stud 3'1 on which a bell crank 32 is freely pivoted. A stud 33 at the lower end of the depending arm of the bell crank 32 is connected by a 1ink3 l to a stud 35 fixed to the end of the traverse rod 251 V A guide-block 40 (Fig. 1) is mounted on cross shaft -ll supported in fixed bearing brackets 52, and the block 40 is provided with a guideway or groove 43 to receive a roll 44 (Fig.1) in the end of the horizontal arm of the bell crank 32. The parts just described are duplicated at opposite sides of the machine, as clearly shown in Fig. 1.

If the guide groove 43 in the block is horizontal and parallel to the path of movement of the traverse block 22, the bell crank 32 will re ceive no angular movement on its stud 3| and the movement of the traverse rod 25 will be identical and simultaneous with the movement of the traverse block 22. The parts are shown in this relation in Fig. 2.

The angular position of the guide-block 49 is determined by a lever 48 having a r0114! engag placed anti-clockwise, as viewed in Fig. 2, the

traverse rod 25 will receive the full sliding motion of the traverse block 22, less a certain reduction when the bell crank 32 receives an anticlockwise movement from the guide-block 40* as the block 22 and bell' crank 32 move to the left: in Fig 2. The same reduction will be made at the right-hand limit of traverse.

The combined effect ofthes two motionsis to reduce the traverse of the rod 25 with respect'to* the traverse ofthe block.22,- and it will b obvious that this reduction in traverse may be increased or decreased by changing the shape of the control cam 48. Changes in length and contour of package may be obtained by substituting a different cam 48, and certain differences in length and contour may also be attained by changing the adjustment of the cam roll lever 45 on the arm 40a.

' Feeding mechanism Provision is made for advancing the cam 48 anti-clockwise a slight amount each time the traverse block 22 is moved to the left in Fig. 2. For this purpose, a ratchet 56 (Fig. 2) is mounted on a fixed stud and is intermittently fed anticlockwise by a feed pawl 52 on a feed lever 53 having an upward extension 54. The extension 54 is normally held against a stop pin 55 by a spring 56 and is engaged by a stud 5'! each time the traverse block 22 moves to the left. The stud 51 is adjustable in a slot 58 so that the swing of the lever 53 may be selectively varied.

A Worm 60 rotates with the ratchet 5i) and meshes with a worm gear 6| on a worm shaft 52, which in turn is rotatable in bearings in a cradle 63 pivoted to swing about the axis of the ratchet 50 and worm gear 60. At its left-hand end, as viewed in Fig. 2, the worm shaft 62 has a worm 64 normally held in mesh with a worm gear 65 by a tension spring 66, A geared connection is thus provided between the ratchet 50 and the contoured cam 48, and the cam will be advanced anti-clockwise each time the stud 5'! is moved to the left with the traverse block 22.

As the winding proceeds, the angle of the guideblock 40 will be progressively shifted, thus varying the efiective traverse of the traverse rod 25 and correspondingly varying the contour of the yarn package. By varying the shape of the cam, the package may be given conical ends of different inclinations or the outer corners of the package may be rounded or beveled at any desired angle.

Any suitabl guiding devices may be mounted on the traverse rod 25. In Fig. 5 I have shown a typical arrangement in which the yarn Y is drawn upward from a spool S (Fig. 2) mounted on a twister spindle 10. The yarn passes through a guide H, over a fixed guide-rod l2, and over a pivoted guide member 13 which is mounted on the traverse rod 25. The yarn is then wound on a package P mounted on a swinging arm 15 and frictionally engaging the driving roll I4. These parts are all of usual commercial construction and form no part of my invention.

The abrupt drop in the cam 48 (Fig. 2) make; it necessary to prevent complete rotation thereof in an anti-clockwise direction, and consequently I omit certain teeth in the worm gear 55 as indicated at 65a (Fig. 2). When this portion of the worm gear becomes associated with the worm 64, rotation of the cam immediately ceases.

In order to reset the cam 48, I provide the cradle 63 with a depending arm 84 (Fig. 1) having a stud 8| engaged by a bent lever 82 pivoted at 83 (Fig. 4) on an arm 84 supported by a fixed stud 85. The upper end of the bent lever 82 is engaged by a disc 86 on the inner end of a sleeve 81 slidable on the stud 85 and connected to the cam 48 by a pin 88 extending through a hole in the disc 86.

When it is desired to reset the cam 48, a handle 90 is connected to the sleeve 81 and the sleeve 8! and disc 86 are pushed inward, thus swinging the bent lever 82, depressing the cradle 63 and disengaging the worm 6,4. This movement is against the tension of the spring 66 by which the worm and worm gear are normally held in engagement. If the handle is then turned clockwise while axial pressure thereon is maintained, I

the cam 48 may be restored to its initial position and, on release of the handle, the parts will resume normal driving relation.

By varying the shape or size of the cam 48 or the setting of the parts of the lever 46, the guideblocks 46 may be displaced clockwise instead of anti-clockwise from the horizontal, in which case the travel of the traverse rod 25 and the yarn guide 13 may exceed the normal travel of the traverse block 22 and a bobbin may be produced in which the outer layers of yarn are longer than the inner layers. Such a yarn package has marked advantages under special conditions.

Having described the details of construction of my improved traverse motion, it will be seen that I have provided a very flexible motion by the use of which a yarn package of any desired contour may be readily obtained from a standard traverse motion such as is disclosed in the I-Ielland patent cited. The flat disc-like cams 48 may be easily and cheaply produced and may be readily modified to provide exactly the package contour found most desirable for a given purpose. Y

A yarn package having flat ends may be produced by removing the pin 51, so that the cam 48 is not fed. The length of the flat-end package to be thus produced may be varied by changing the setting of the guide-blocks 40. The longest practical package would be obtained by turning the blocks 40 clockwise 45 from the horizontal, and the shortest package would be obtained by turning the blocks 45 anti-clockwise. Any desired length between the longest and shortest could be obtained by intermediate settings of the blocks 40.

Tapered and rounded ends, as previously explained, can be obtained by feeding the cam 48 during the building of the package, and further variations may be obtained by reversing the cam 48. to take care of the gradual change in yarn tension as the yarn is unwound from a rotating supply package. previously caused the ends of the'wound packages to be more or less irregular and unsatisfactory. An ideal shipping package for most purposes has a regular taper at each end but with a slight rounding at the outer corners. Such a package may be readily secured by using my improved traverse motion.

Having thus described my invention and the advantages thereof, I do not wish to be limited to the details herein disclosed, otherwise than as set forth in the claims, but what I claim is:

1. In a yarn traverse motion, a traverse rod, a traverse block having a fixed straight-lin reciprocating motion, a lever mounted on said block and connected to said rod, a guide-block for said lever, a cam controlling the angular setting of said guide-block, means including a gear for feeding said cam progressively as the winding of the yarn package proceeds, and said gear having certain teeth omitted and being thereby rendered effective to stop the feed of the cam at a predetermined point.

2. In a yarn traverse motion, a traverse rod, a traverse block having a fixed straight-line reciprocating motion parallel to said traverse rod, a lever mounted on said block and connected to said traverse rod, a guide-block for said lever The contour of the cam may be modified These tension changes have mounted on a fixed pivot and having a guideway therein, a roll on said lever seated in said guideway, a cam shaft, a cam on said shaft, a cam roll engaged by said cam, a lever on which said cam roll is mounted, an arm integral with said guide-block and to which said lever is pivoted, a bolt-and-slot connection between said lever and said arm adapted to secure said parts in selected angular relations, whereby the operative effect of said cam may be modified, and means to feed said cam progressively as the winding of the yarn package proceeds.

3. In a yarn traverse motion, a traverse rod, a traverse block having a fixed straight-line reciprocating motion, a lever mounted on said block and connected to said traverse rod, a guideblock for said lever, a cam shaft, a cam on said REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Name Date Shipman July 2, 1940 Treckmann Aug. 11, 1942 Loveridge et a1 July 3, 1945 Number 

